首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   754篇
  免费   7篇
教育   517篇
科学研究   30篇
各国文化   8篇
体育   124篇
综合类   2篇
文化理论   3篇
信息传播   77篇
  2023年   1篇
  2022年   1篇
  2021年   13篇
  2020年   7篇
  2019年   29篇
  2018年   34篇
  2017年   26篇
  2016年   35篇
  2015年   21篇
  2014年   24篇
  2013年   206篇
  2012年   19篇
  2011年   22篇
  2010年   11篇
  2009年   23篇
  2008年   27篇
  2007年   16篇
  2006年   21篇
  2005年   25篇
  2004年   17篇
  2003年   20篇
  2002年   11篇
  2001年   8篇
  2000年   16篇
  1999年   10篇
  1998年   10篇
  1997年   11篇
  1996年   11篇
  1995年   11篇
  1994年   9篇
  1993年   4篇
  1992年   11篇
  1991年   7篇
  1990年   7篇
  1989年   6篇
  1988年   8篇
  1987年   1篇
  1986年   1篇
  1985年   3篇
  1984年   4篇
  1983年   2篇
  1982年   2篇
  1981年   2篇
  1980年   2篇
  1979年   2篇
  1977年   2篇
  1976年   2篇
排序方式: 共有761条查询结果,搜索用时 296 毫秒
41.
IntroductionIt is often quoted that 70% of clinical decisions are based on laboratory results, but the evidence to substantiate this claim is lacking. Since clinical guidelines aim to document best-practice decision making for specific disease conditions, inclusion of any laboratory test means that the best available evidence is recommending clinicians use it. Cardiovascular disease (CVD) is the world’s most common cause of mortality, so this study reviewed all CVD guidelines published by five national/international authorities to determine what proportion of them recommended laboratory testing.Materials and methodsFive leading CVD guidelines were examined, namely the European Society of Cardiology (ESC), the UK National Institute for Health and Clinical Excellence (NICE), the American College of Cardiology (ACC), the Australian Heart Foundation (AHF) and the Cardiac Society of Australia and New Zealand (CSANZ).ResultsA total of 101 guidelines were reviewed. Of the 33 individual ESC guidelines relating to CVD, 24/33 made a direct reference to the use of clinical laboratory tests in either diagnosis or follow-up treatment. The same applied to 15/20 of NICE guidelines, 24/32 from the ACC and 15/16 from the AHF/CSANZ. Renal function and blood count testing were the most recommended (39 and 26 times), with lipid, troponin and natriuretic peptide measurement advocated 25, 19 and 19 times respectively.ConclusionsThis study has shown that laboratory testing is advocated by between 73% and 94% of individual CVD guideline recommendations from five national/international authorities. This provides an index to assess the potential value of laboratory medicine to healthcare.  相似文献   
42.
43.
44.
How does a testing component function in an integrated learning system? How can you customize computerized tests to meet local specifications? How are computerized tests implemented and evaluated? Is the pay-off of computerized testing justified?  相似文献   
45.
This chapter discusses the role conflict of the educational researcher who comes upon an unprofessional relationship between teacher and pupil. It is argued that the whistleblowing literature in related professions, with its focus on standard conditions and solutions framed as obligations, is inadequate. Reference is made to the idea of 'guilty knowledge': the feelings of guilt that attach when one comes to know of harm visited on innocent others, and has no unqualified sense of which way to act. Distinguishing moral from causal responsibility helps to show how blame need not necessarily attach to the guilt-ridden researcher, whichever option she chooses.  相似文献   
46.
This article examines musical taste, as revealed by the Cultural Capital and Social Exclusion survey. It shows that musical taste is highly divided and contentious, with large numbers of people intensely disliking certain genres of music. It shows the existence of two distinctive musical taste communities, one linking taste for rock, electronic, urban, world and heavy metal music, and the other linking classical music and jazz. Tastes for specific musical works do not easily map onto musical genres, and are less closely correlated with each other. Using logistic regression, it is shown that age and ethnicity in particular, and gender, educational qualifications and occupational class, strongly condition taste for both musical genres and works.  相似文献   
47.
48.
49.
50.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号